Radio alarm clock



FIG. 1 is a front view of a radio alarm clock, showing my new design;

FIG. 2 is a top view;

FIG. 3 is a rear view;

FIG. 4 is a right side view;

FIG. 5 is a left side view;

FIG. 6 is a bottom view;

FIG. 7 is a front exploded view;

FIG. 8 is a right side exploded view;

FIG. 9 is a top exploded view; and,

FIG. 10 is a front, top, right side perspective view. 

The ornamental design for a radio alarm clock, as shown and described. 